Stovepipe-joint.



.nular shoulder 5.

iran sTATEs PATENT OFFICE.

ORRIN M. COWLES, OF DEVILS LAKE, NORTH DAKOTA.

STOVEPIPE-J OIN T.

Specification of Letters Patent.

Patented March 10, 1908.

Application med July is, 1907. y serial No. 383,999.

To all whom it may concern:

Be it known that I, ORiuN M. CowLEs,

citizen of the United States, residing at Devils Lake, inthe county vof Ramsey and State of North Dakota, have invented certain new and useful Improvements in Stove-` pipe-Joints, of which the following is a speciiication.

The present invention relates to a novel means for joining stove pipe sections and like members and aims to provide an improved joint which is peculiarly designed so as to eifectively prevent any sagging of the pipes.

when disposed 'horizontally or accidental ltelescoping of the members when set up in a vertical position.

The invention also contemplates a novel construction in which the pipes' are reinforced at the joints and'in which the joints are absolutely fire proof.

For a full description of the invention and the merits thereof and' also to acquire a knowledge of the details of construction and the means for effecting the' result, reference is to be had to the following description and accompanying drawings, in which:

Figure 1 is a longitudinal sectional view through a' pipe embodying the invention.

Fig. 2 is a detail view of one of the pipe sec-v yone end thereof is reduced in cross section as indicated at 3, the said reduced portion being designed. to lit within the end 4 of the next adjacentsection and terminating in an an- Aslecvc 6 is designed to slip over the cud ol thc pipe formed with the reduced portion 3, one of the edges of the sleeve extending beyond the shoulder 5 at the termination of the reduced portion and being riveted or otherwise rigidly secured to the pipe as indicated at 6, while the remain! ing portionof the sleeve 'is spaced from the reduced portion 3 of the pipe and cooperates therewith'to form the annular socket 2. It

may also be found desirable to contract the ent-remity 4 of the reduced portion 3 of the pipe in order to facilitate the entrance of the same into the end portion 4 of the adjacent pipe section and the assembling of the various sections for use. The end portion 4 of each .of the pipe sections 1 terminates in an annular shoulder 7 having the upper face thereof beveled to dellect any moisture awaylrom the pipe while the lower face constitutes a stop and engages the extremity of the sleeve 6. Where the pipe sections are formed of sheet metal asin the present instance this shoulder 7 may be conveniently pressed'out' wardly therefrom. In assembling the various pipe sections the ends 4 are thrust within the annular sockets 2 until the said endsabut against theA annular shoulder 5 andthe stop 7 engages the extremity ofthe sleeve 6. Attention is directed to the fact that with this construction three thicknesses of material are provided at the joint and thatthe latter is -thereby reinforced against bending andis sufficiently rigid to hold the pipes in alinement with each other and prevent any sagging should they be disposed in a-liorizontal position. It will also be apparent that an extremely tight joint is provided which effectively prevents the escape el sparks or the l like from ther pipe.

Having thus described the invention, what is claimed as new is:

1. In a pipe joint, the combination of two pipe sections, the end of one of the sections boing reduced and the outer end of the reduced portion being contracted while the inner end ofthe said reduced portion terminates in an annular shoulder, and a sleeve :ipplied to the pipe section toriiied with the reduced end and coi'iperating with the latter to forni an annular socket designed to receive an end of the opposite pipe section.

2. A pipe section provided with, an annular shoulder adjacent 'one extremity thereof While the opposite end of the pipe section is In testimony whereof I aix my signature reduced, the said reduced portion terminatin presence of two witnesses. inor in an annular shoulder, and a sleeve being v 7 r applied to the end of the pipe section prol; ORRIN M CO LES' n" S'] vided with the reduced portion and eoperating with the said reduced portion to form an annular socket for the purpose speoed.

- Witnesses:

' F. H. ROUTIR,

H. WHIPPLE. 

